Adherence to the procedures and precautions described in this chapter is essential for proper service. After completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all components operate properly.

note:

Each computer has a unique serial number and product ID number that are located on the upper left side of the computer. Keep these numbers available for use when contacting customer service for assistance.

note:

Turn off the computer and any peripheral devices that are connected to it.

caution:

Turn off the computer before disconnecting any cables.

caution:

Regardless of the power-on state, voltage is always present on the system board as long as the system is plugged into an active AC outlet. In some systems the cooling fan is on even when the computer is in the “Standby,” or “Suspend” modes. The power cord should always be disconnected before servicing a unit.

Disconnect the power cord from the electrical outlet and then from the computer.

Disconnect all peripheral device cables from the computer.

note:

During disassembly, label each cable as you remove it, noting its position and routing. Keep all screws with the units removed.

caution:

The screws used in the computer are of different thread sizes and lengths; using the wrong screw in an application may damage the unit.

caution:

The memory sockets on the system board can be populated with up to four industry-standard DIMMs. These memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory support, you can populate the system board with up to 16-GB of memory configured in a high-performing dual channel mode.

note:

There are four DIMM sockets on the system board, with two sockets per channel. The sockets are labeled DIMM1, DIMM2, DIMM3, and DIMM4. Sockets DIMM1 and DIMM2 operate in memory channel A. Sockets DIMM3 and DIMM4 operate in memory channel B.

Figure :

DIMM Socket Locations

Item

Description

Socket Color

1

DIMM1 socket, Channel A (populate first)

Blue

2

DIMM2 socket, Channel A

Black

3

DIMM3 socket, Channel B (populate second)

Blue

4

DIMM4 socket, Channel B

Black

note:

A DIMM must occupy the DIMM1 socket.

The system will automatically operate in single channel mode, dual channel mode, or flex mode, depending on how the DIMMs are installed.

The system will operate in single channel mode if the DIMM sockets are populated in one channel only.

The system will operate in a higher-performing dual channel mode if the total memory capacity of the DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B. The technology and device width can vary between the channels. For example, if Channel A is populated with two 512-MB DIMMs and Channel B is populated with one 1-GB DIMM, the system will operate in dual channel mode.

The system will operate in flex mode if the total memory capacity of the DIMMs in Channel A is not equal to the total memory capacity of the DIMMs in Channel B. In flex mode, the channel populated with the least amount of memory describes the total amount of memory assigned to dual channel and the remainder is assigned to single channel. For optimal speed, the channels should be balanced so that the largest amount of memory is spread between the two channels. If one channel will have more memory than the other, the larger amount should be assigned to Channel A. For example, if you are populating the sockets with one 1-GB DIMM, and three 512-MB DIMMs, Channel A should be populated with the 1-GB DIMM and one 512-MB DIMM, and Channel B should be populated with the two 512-MB DIMMs. With this configuration, 2-GB will run as dual channel and 512-MB will run as single channel.

In any mode, the maximum operational speed is determined by the slowest DIMM in the system.

caution:

You must disconnect the power cord and wait approximately 30 seconds for the power to drain before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing memory modules while voltage is present may cause irreparable damage to the memory modules or system board.

The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important to use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting from having incompatible metals in contact with each other.

Static electricity can damage the electronic components of the computer or optional cards. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the module.

warning:

To reduce risk of personal injury from hot surfaces, allow the internal system components to cool before touching.

Open both latches of the memory module socket (1), and insert the memory module into the socket (2).

Figure :

note:

A memory module can be installed in only one way. Match the notch on the module with the tab on the memory socket.

A DIMM must occupy the DIMM1 socket. Always populate the blue sockets before the black sockets in each channel.

In order to create a dual-channel memory configuration, the memory capacity of Channel A must equal the memory capacity of Channel B. Refer to Populating DIMM Sockets for more information.

Push the DIMM module down firmly into the socket, ensuring that the module is fully inserted and properly seated. The DIMM must be pushed all the way down into the socket and sit evenly in the socket to avoid memory corruption. Make sure the latches are in the closed position (3).

Repeat steps 4 and 5 to install any additional modules.

Replace the computer access panel.

Reconnect the power cord and any external devices, then turn on the computer. The computer should automatically recognize the additional memory when you turn on the computer.

Lock any security devices that were disengaged when the access panel was removed.

Locate the correct vacant expansion socket on the system board and the corresponding expansion slot on the back of the computer chassis.

On the rear of the computer, a slot cover lock secures the expansion card brackets in place. Remove the screw from the slot cover lock then slide the slot cover lock up to remove it from the chassis.

Figure :

Before installing an expansion card, remove the expansion slot cover or the existing expansion card.

note:

Before removing an installed expansion card, disconnect any cables that may be attached to the expansion card.

If you are installing an expansion card in a vacant socket, you must use a flatblade screwdriver to pry out the metal shield on the rear panel that covers the expansion slot. Be sure to remove the appropriate shield for the expansion card you are installing.

Figure :

If you are removing a PCI Express x1 card, hold the card at each end and carefully rock it back and forth until the connectors pull free from the socket. Be sure not to scrape the card against the other components.

Figure :

If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion socket away from the card and carefully rock the card back and forth until the connectors pull free from the socket. Be sure not to scrape the card against the other components.

Figure :

Store the removed card in anti-static packaging.

If you are not installing a new expansion card, install an expansion slot cover to close the open slot.

caution:

After removing an expansion card, you must replace it with a new card or expansion slot cover for proper cooling of internal components during operation.

To install a new expansion card, hold the card just above the expansion socket on the system board then move the card toward the rear of the chassis so that the bottom of the bracket on the card slides into the small slot on the chassis. Press the card straight down into the expansion socket on the system board.

Figure :

note:

When installing an expansion card, press firmly on the card so that the whole connector seats properly in the expansion card slot.

Replace the slot cover lock and secure it in place with the screw that was previously removed.

Figure :

Connect external cables to the installed card, if needed. Connect internal cables to the system board, if needed.

Replace the computer access panel.

Reconnect the power cord and any external devices, then turn on the computer.

Lock any security devices that were disengaged when the access panel was removed.

Reconfigure the computer, if necessary. Refer to the Computer Setup (F10) Utility Guide for instructions on using Computer Setup.

The primary Serial ATA (SATA) hard drive must be connected to the dark blue primary SATA connector on the system board labeled SATA0.

Connect the first SATA optical drive to the white SATA connector on the system board labeled SATA1.

Connect a second SATA optical drive to the black SATA5 connector.

Connect a second SATA hard drive to the red SATA4 connector.

Connect a diskette drive to the connector labeled FLOPPY.

Connect a media card reader to the USB connector labeled F_USB2.

The system does not support Parallel ATA (PATA) optical drives or PATA hard drives.

You may install either a third-height or a half-height drive into a half-height bay.

If needed, HP has provided extra drive retainer screws on the interior of the front bezel that are used to secure the drives in the drive cage. Hard drives use 6-32 standard screws. All other drives use M3 metric screws. The HP-supplied M3 metric guide screws (1) are black. The HP-supplied 6-32 standard screws (2) are silver.

Figure :

caution:

To prevent loss of work and damage to the computer or drive:

If you are inserting or removing a drive, shut down the operating system properly, turn off the computer, and unplug the power cord. Do not remove a drive while the computer is on or in standby mode.

Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid touching the connector.

Handle a drive carefully; do not drop it.

Do not use excessive force when inserting a drive.

Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic fields such as monitors or speakers.

If a drive must be mailed, place the drive in a bubble-pack mailer or other protective packaging and label the package “Fragile: Handle With Care.”

If you are installing a drive in a bay covered by a bezel blank, remove the front bezel then remove the bezel blank.

If you are adding a drive to an empty lower optical drive bay, you must remove the knockout plate from the bay. To do so, insert a flat screwdriver into the knockout plate slot and rotate the screwdriver to break the knockout plate out of the chassis. Discard the knockout plate.

If the new drive has screws installed on the sides of the drive, remove the screws before inserting the drive into the chassis.

Slide the drive in through the front of the chassis (1) until the screw holes on the drive are aligned with the screw holes on the drive cage and install the two M3 metric retainer screws (2) as shown in the following illustration.

note:

Extra drive retainer screws are provided on the interior of the front bezel if needed. The M3 metric retainer screws for optical drives are black. Refer to Installing Additional Drives for an illustration of the retainer screws location.

Figure :

If the system configuration includes only one optical drive, connect the SATA data cable to the white system board connector labeled SATA1. If you are adding a second optical drive, connect the SATA data cable to the black system board connector labeled SATA5.

Connect the power cable (1) and data cable (2) to the rear of the optical drive.

Figure :

Replace the front bezel and access panel.

Reconnect the power cord and turn on the computer.

Lock any security devices that were disengaged when the access panel was removed.

The system automatically recognizes the drive and reconfigures the computer.

If you are installing a diskette drive or media card reader in a bay covered by a bezel blank, remove the front bezel then remove the bezel blank.

If you are adding a drive to an empty drive bay for the first time, you must remove the knockout plate from the bay. To do so, insert a flat screwdriver into the knockout plate slot and rotate the screwdriver to break the knockout plate out of the chassis. Discard the knockout plate.

If the new drive has screws installed on the sides of the drive, remove them before inserting the drive into the chassis.

Slide the drive in through the front of the chassis (1) until the screw holes on the drive are aligned with the screw holes on the drive cage and install the two M3 metric retainer screws (2) as shown in the illustration below.

note:

Extra drive retainer screws are provided on the interior of the front bezel if needed. The M3 metric retainer screws for diskette drives or media card readers are black. Refer to Installing Additional Drives for an illustration of the retainer screws location.

Figure :

Connect the appropriate drive cables:

If installing a diskette drive, connect the power and data cables to the rear of the drive and connect the other end of the data cable to the connector on the system board labeled FLOPPY.

If installing a media card reader, connect the USB cable from the media card reader to the USB connector on the system board labeled F_USB2.

note:

Before you remove the old hard drive, be sure to back up the data from the old hard drive so that you can transfer the data to the new hard drive. Also, if you are replacing the primary hard drive, make sure you have created a Recovery Disc Set to restore the operating system, software drivers, and any software applications that were preinstalled on the computer. If you do not have this CD set, select Start>HP Backup and Recovery and create it now.

Slide the new drive into the hard drive cage (1), aligning the drive with the four screw holes on the cage. Install the four 6-32 standard screws that secure the hard disk drive to the hard drive cage (2). Make sure the hard disk drive cables are facing the top of the drive cage.

note:

If you are replacing an old drive with a new drive, use the four retainer screws from the old drive to install the new drive.

note:

If you are installing a second hard drive, use four of the extra standard 6-32 screws that are installed on the interior of the front bezel. The 6-32 screws are silver. Refer to Installing Additional Drives for an illustration of the retainer screws location.

Figure :

Connect the power cable (1) and data cable (2) to the back of the hard drive.

Figure :

caution:

Never crease or bend a SATA data cable tighter than a 30 mm (1.18 in) radius. A sharp bend can break the internal wires.

Place the hard drive cage into the chassis (1), then slide it down toward the bottom of the chassis until it locks into place (2).

Figure :

Attach the two screws that secure the hard drive cage to the chassis.

Figure :

If installing a new drive, connect the opposite end of the data cable to the appropriate system board connector.

note:

If your system has only one SATA hard drive, you must connect the hard drive data cable to the dark blue connector labeled SATA0 to avoid any hard drive performance problems. If you are adding a second hard drive, connect the data cable to the red connector labeled SATA4.

Replace the computer access panel.

Reconnect the power cord and any external devices, then turn on the computer.

Lock any security devices that were disengaged when the access panel was removed.

note:

If you are replacing the primary hard drive, use the Recovery Disc Set to restore the operating system, software drivers, and any software applications that were preinstalled on the computer.

Press the tab on the right side of the switch holder (1) to disengage it from the chassis, rotate the switch to the left (2), and then pull it to the right and away from the chassis while guiding the wires through the hole in the chassis.

To install the power switch/LED assembly, reverse the removal procedures.

Loosen the four captive screws that secure the heatsink to the system board.

Lift the heatsink from the processor and set it on its side to keep from contaminating the work area with thermal grease.

caution:

Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly seat the heatsink to the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board.

When reinstalling an existing heatsink, make sure that its bottom has been cleaned with an alcohol wipe and fresh thermal grease has been applied to the top of the processor. New heatsinks come from the factory with fresh thermal grease already applied.

Disconnect the heatsink control cable from the system board and remove the heatsink Heatsink assembly).

Rotate the locking lever to its full open position (1).

Raise and rotate the microprocessor retainer to its full open position (2)

Carefully lift the processor from the socket (3).

caution:

Do NOT handle the pins in the processor socket. These pins are very fragile and handling them could cause irreparable damage. Once pins are damaged it may be necessary to replace the system board.

caution:

The heatsink must be installed within 24 hours of installing the processor to prevent damage to the processor’s solder connections.

To install a new processor:

Place the processor in its socket and close the retainer.

Secure the locking lever.

If reusing the existing heatsink, go to step 3.

If using a new heatsink, go to step 6.

If reusing the existing heatsink, clean the bottom of the heatsink with the alcohol pad provided in the spares kit.

Apply the thermal grease provided in the spares kit to the top of the processor and install the heatsink atop the processor.

Go to step 7.

If using a new heatsink, remove the protective covering from the bottom of the heatsink and place it in position atop the processor.

Secure the heatsink to the system board and system board tray with the 4 captive screws and attach the heatsink control cable to the system board.

caution:

Heatsink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly seat the heatsink on the processor. This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board.

note:

After installing a new processor onto the system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system ROM BIOS can be found on the HP Software and Drivers page

warning:

Voltage is always present on the system board when the computer is plugged into an active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be disconnected from the computer and/or the AC outlet before opening the computer.

note:

When installing a new power supply, be sure to set the red switch to the setting (230 V or 115 V) appropriate for the country in which the computer is used. Spare power supplies normally arrive set for 230 V.

Disconnect the power, and data cables from the back of all installed drives.

Disconnect all cables from the system board.

Remove the eight screws that secure the system board to the chassis.

Slide the system board toward the front of the chassis, and then lift it up and out of the chassis.

note:

The system board in the computer may look slightly different from the one shown here.

To install the system board, reverse the removal procedure.

note:

When replacing the system board, you must also change the chassis serial number in the BIOS.

note:

After installing a new system board, always update the system ROM to ensure that the latest version of the BIOS is being used on the computer. The latest system ROM BIOS can be found on the HP Software and Drivers page.

The battery that comes with your computer provides power to the real-time clock and has a lifetime of about three years. When replacing the battery, use a battery equivalent to the battery originally installed on the computer. The computer comes with a 3-volt lithium coin cell battery.

note:

The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall socket. The lithium battery is only used when the computer is NOT connected to AC power.

warning:

This computer contains an internal lithium manganese dioxide battery. There is a risk of fire and burns if the battery is not handled properly. To reduce the risk of personal injury:

Do not attempt to recharge the battery.

Do not expose to temperatures higher than 60°C (140°F)

Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water.

Replace the battery only with the HP/Compaq spare designated for this product.

caution:

Before replacing the battery, it is important to back up the computer CMOS settings. When the battery is removed or replaced, the CMOS settings will be cleared. Refer to the Troubleshooting Guide for information on backing up the CMOS settings.

note:

Batteries, battery packs, and accumulators should not be disposed of together with the general household waste. In order to forward them to recycling or proper disposal, please use the public collection system or return them to HP, its authorized partners, or its agents.

caution:

Static electricity can damage the electronic components of the computer or optional equipment. Before beginning these procedures, ensure that you are discharged of static electricity by briefly touching a grounded metal object.

To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery. When the battery pops up, lift it out (1).

To insert the new battery, slide one edge of the replacement battery under the holder’s lip with the positive side up (2). Push the other edge down until the clamp snaps over the other edge of the battery.

Replace the computer access panel.

Plug in the computer and turn on power to the computer.

Reset the date and time, your passwords, and any special system setups, using Computer Setup. Refer to the Computer Setup (F10) Utility Guide.